Pipe-cutter.



- 35 ter wherein commonmeans is provided for UNITED STATES PATENT OFFICE.

JOHN B. LAMBE, F GRAETTINGER, IOWA.

PIPE-CUTTER.

Specification of Letters Patent.

Patented June 18, 1918.

Application filed July 30, 1917. Serial No. 183,569.

. and useful Improvements in Pipe-Gutters,

of which the following is a specification.

The present invention has reference generally to improvements in that class of inventions known. as cutting and punching w and more particularly relates to a pipe cutter. j A

-It is the primary aim and object of this invention to. provide a device of the above character designed for removably receiving a section of pipe so as tohold the latter in aproper position during. the operation of the cutting means for severing the pipe into two smaller sections or nipples.

More particularly, this-invention aims to I provide a pipe cutter wherein the construction thereof permits of the removable supportingjof a pipe section beneath the cutting means so as to assure of a quick and efiective cutting of the pipe section, the cutting means being designed to pass between the pipereceiving and supporting means.

; It is a more specific. object of this invention to provide a pipe cutter wherein the pipe section receiving sleeves are expansible so astoassure 'of an effective engagement of thefl pipe section on the sleeves-preparatory to. the cnttingjoperation.

As a further improvement the present invention embraces the provision of a pipe cutsupporting and guiding the cutter during movement and for also supporting the pipe section when in position on the sleeves.

Among the other aimsand objects of this 1 invention maybe recited'the provision of a convenient and satisfactory embodiment of device of the character described with a view to compactness, and in which the number of parts are few, the constructionsimple, the cost'ofproduction low and the efficiency high.

Other improvements and novel details in the construction and arrangement of the various parts 1 of the apparatus will be brought out. more in detail in the description to follow which. for a clear understanding of the invention should be considered in connection with the accompanying drawings forming a part hereof, and wherein is disclosed. for the purpose of illustration, a

the invention. It is to be noted in this connection that minor changes in the construction and arrangement of parts may be made without departing from the principle of operation of thevarious parts.

The invention is clearly illustrated in the accompanying drawings in which Figure 1 is a top plan view of the device;

Fig. 2 is a front elevation thereof;

Fig. 3 is an end elevation of the invention;

Fig. 4 is an enlarged fragmentary longitudinal sectional detail; a

Fig. 5 is a detail of the invention.

Similar characters of reference are employed in all the above described views, to indicate corresponding parts.

Referring now, more particularly, to the accompanying drawings, there is provided a supporting base plate 1 being relatively flat and of 'a rectangular configuration while mounted on the upper surface of the base plate is the improved pipe section receiving means which, in the present instance, may be said to consist of a pair of relatively long rods 2 the outer ends of which are bent angularly as at 3 and rigidly connected to the upper surface of the plate 1 adjacent one edge thereof while portions of the rod are offset as at 4L and arranged in substantially spaced parallel relation the free ends thereof being rigidly secured toan expansible pipe receiving sleeve 6 the latter being slit as at 7 to allow expansion of the sleeve in a manner that will hereinafter become apparent. Relatively short rods 8 are now employed and have ears 9 formed on their angularly bent ends 10 while the ears are in turn pivotally mounted through the instrumentality of suitable pintles 11 between pairs of spaced cars 12 carried on opposite surfaces of the plate 1 adjacent the opposite end. Another expansible pipe receiving sleeve 13 is rigidly connected to the outer ends of the rods 8 and is of a construction similar to the construction of sleeve 6 being slit as at 14: to allow expansion.

As intimated, improved means have been provided for expanding the sleeves. In reducing this feature of the invention to practice in each sleeve opposed and oppositely threaded rods 15 are rigidly connected at their outer ends to diametrically opposite points on the inner surface of each sleeve while the adjusting sleeve 16 hasits inner surface adjacent its opposite ends threaded correspondingly to the free ends of the rods which are adjustably arranged within the sleeve 16 as indicated. A cog wheel '17i's carried intermediate the ends of the sleeves and is adjustably engageable by a rack bar. 18:, the handl 1-9 of which is .slidi bly mounted in suitable bearings 20 carried adjacent the outer edge of each sleeve as indicated. A knob 21 is formed on the outer end ofthe handle and asis apparent by adjusting the knob owing to the m. ngement of the rack bar 18 and the cog wheel 17 the sleeve 16 will be rotated and'by reason provided the plate 1 at'po'ints beneath the outer'edges V ofthe'sleeves 6 and 13 and of course are ar-' ranged in; closely spaced parallel relation with respect to each other These bars are intermediate their "ends 5 with alining arcuate recesses 23 while support ing posts or standards 24+are formedadj-acent one of the ends of the bars for pivota'lly supporting the cutting means which maybe said to consist of a'blade 25 in one edge fromthe inner edge and 'adjacentthe upper end of'which projects a lug 26 pivot-- ally mounted through the instrumentality of suitable fastening devices 27 between the:

upper-ends ofthe posts 24 while a handle 28' extends from the opposite end "and adjacent the upper-edge of the blade, as indicated. Upright guides 29 are formed on the'opposit'e ends of the bars 22 and are arranged in opposed and Y spaced relation with respect to- -each' other so as to guide the .movement" of the cutting blade 25 as it is moved" downwardly across the pipe sec- Themode of op'erationof the presentin ventionmaybe reviewed as"follows:

that the pipe section 30 may be entirely ar- Assumingthat the parts have been assembled'in the manner described and as indicated in the drawings, to apply a section of pipe 30 and sever the same into two sec-* tio'nsfor nipples the (rods 8 carrying the sleeve 13'are swungupwardly to permit of the application of pipe section 30 -'over the sleeve'fl andth portions 1 of the rods 2 so ranged on: these parts and permit of the swing-in "ofthe rods in the sleeve. 13 to their-original position. Subsequent tothis .aet'icmthe ipe section 30 is slid-over the sleeve 13. Now, as soon as the pipe section has beenproperly adjusted on these sleeves the knobs 21 may be actuated so that the rack bars will rotate the cog Wheels 17 to consequently expand the sleeves so as to assure of the effective engagement of the sleeves Withthe pipe section. In this connection it is to be observed that the. pipe section rests in the recesses 23, in the bars The partsare now in the proper position for; the operation of the cutting means. The handle 28is grasped soas toq sw'in-g the blade 25 about its pivot while thettating edge oft-heblade will engage the pipe "sec-- tion and sever it during the continued downward movementof the handle, the blade being-guided during such movement between the guidesf2'9'and by reason or the fact that the a'djacentedges of thesleeves are arranged 'in' spaced relation with each other the blade will readily pass between the sp ace; while cutting the pipe section 30.

It'fis believed-that in 'viewbf thefor going description a further} detailed de scription -o'fthe operation oif'the invention is entirely unnecessary. 'Liljz-le'wi's'e it "is; be l'iev'ed'that the advantages of theinventien will be readily apparent.

Having thus ,fuHydescribed the invention what is claimed as new and; desired 'w be secured' by Letters Patentis": y 1'. A devicepfthecharacter described in eluding asupportingb'ase' plate,-:a rigidly mounted pipe reeeiving' sieeve'err-the base plate, a movably-mounted pipe receiving sleeve-on the base plate arranged in'. ninement "and in spaced relation with the first sleeve, cutting" means, and" common means mounted-on the base plate-and positioned "I" beneath the pipe section receiving" sleeve so as to support the latter in spaced relation. to the plate and beingane designedto ivotally support thecuthing means in guiding movement thereof when swung" down ardly so as to pass; between-- t e sleeves. "1: 1

2 A de'i lfdf the (illaiiabiiel d'SCIlbd iii eluding a'isupporting base plata a pair" of exp'ansiblepipe receiving sleeves mounted on the-base-plate one of' w-hichf'is movablerelative to the other, means-on the base plate and positioned'f beneath the adjaeentf spaced'edges' ofthe sleeves for supporting the sleeves in spaced relation to th'e' base} plate, and cutting means pivotally'mount ed with respect to'thebase plate; and adapted to sever a pipe' seetion mounted on" the sleeves and pa'ssed'between the sleeves. V

A device Of theeharaeter describd in cluding abase plate, a pair of split" pipe re-g celving sleeves mounted-on the' bas plate one 'of whichis movable relativetoi the" other, oppositely threaded rods'carr'id at diametrically opposite pointson the;

surface of each sleeve," an adjiistiagi' eiesve 150.

operably mounted on the adjacent ends of the opposed rods, a cog wheel carried by the sleeve, a manually operable rack bar slidably mounted in each sleeve and engageable with the adjacent cog wheel for expanding and contracting each sleeve, means on the base plate for supporting the adjacent spaced edges of the sleeves, and cutting means operably mounted on the base plate and designed for movement between the adjacent edges of the sleeves when cutting a section of pipe on the sleeves.

4. A device of the character described ineluding a supporting base plate, spaced transversely arranged bars on the base plate provided with recesses in their upper edges and intermediate their ends, posts formed on the inner ends of the bars, a cutter pivotally mounted on the upper ends of the posts,

cutter guides formed on the opposite ends of the bars, a pipe supporting sleeve, a pair of rods having their outer ends connected to the base plate and having portions thereof ofi'set and connected at their free ends to the inner ends of the sleeve so as to maintain the outer end of the sleeve above the recesses in the adjacent cross bar, another sleeve, and sup orting rods therefor having their inner on s pivotally connected to the opposite end of the base plate and their opposite ends connected to the adjacent end of the last mentioned sleeve so as to dispose the outer edge of the sleeve above the recess in the adjacent transverse bar, substantially as described.

In testimony whereof I aflix by signature.

JOHN B. LAMBE.

Copies of this patent may be obtained for five cents each,- by addressing the "Commissioner 01' I'atents,

' Washington, D. 0." 

